User’s Manual for
Remote Unit ION™-M80/90/19P
Page 40 MF0133ABA.doc
5.3. CLEANING THE HEAT SINK
) Note: Read the health and safety warnings in chapter 1.2 as well as the
instructions in chapter 5.1 General before starting with the
replacement procedure. Then, proceed as follows:
7. Switch off the Remote Unit. Make sure that mains is disconnected for the
following procedure.
9. Use compressed air (max. 5 bar) to
blow out the heat sink from back to
front:
8. Remove the fan plate with the fan unit
from the Remote Unit as described in
chapter 5.2 Replacing the Fan Unit,
steps 2 and 3:
10. In case the dirt cannot be blown out
completely and parts of it stick to the
ribs of the heat sink, clean the parts
concerned carefully from the front
using e.g. a brush. Take care that the
material is not scratched or damaged.
11. After cleaning the heat sink, mount the fan unit again according to chapter 5.2
Replacing the Fan Unit, steps 5 and 6. Then, switch the Remote Unit back on.
Compressed air
r m
x.
Brush (not metallic)
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